# Collecting like terms

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## Lesson details

### Key learning points

- In this lesson, we will learn to collect together terms that are alike and manipulate linear expressions.

### Licence

This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

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### 5 Questions

Q1.

Which of the following best describes an expression?

Algebra.

Something which has letters and numbers in.

Something which has letters in.

Q2.

Which of the following is NOT an expression?

2 - 3

4x + 2

6 x 10y

Q3.

How should we write 5 x a - 2?

5 - 2a

5 x a - 2

5(a - 2)

Q4.

Which value of x means that 3x < 2x + 1

1

2

5

Q5.

Which value of y means that -3y - 1 > 2y

0

0.5

7

### 6 Questions

Q1.

Fill in the gap. We can collect together like terms of variables and constants in order to ______ algebraic expressions.

Create

Produce

Sum

Q2.

Fill in the gap: 14 × 3 = 10 × 3 + ____ × 3

-4

1.2

13

Q3.

Fill in the gaps: 5a + 9a = ___ × a = ____

13, 13a

15, 15a

45, 45a

Q4.

Fill in the gaps: 18x + 20x = 30x + ____

10x

18x

38x

Q5.

Simplify the expression 10a -4b + 2a + b

12a - 5b

12a + 3b

8a + 5b

Q6.

Simplify the expression -20x + 3 - 8y + x -y

-19x + 3 - 7y

-21x + 3 - 7y

-25xy